WO2021012165A1 - 一种薄膜封装结构、oled显示面板及显示器 - Google Patents

一种薄膜封装结构、oled显示面板及显示器 Download PDF

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WO2021012165A1
WO2021012165A1 PCT/CN2019/097156 CN2019097156W WO2021012165A1 WO 2021012165 A1 WO2021012165 A1 WO 2021012165A1 CN 2019097156 W CN2019097156 W CN 2019097156W WO 2021012165 A1 WO2021012165 A1 WO 2021012165A1
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Prior art keywords
quantum dots
organic layer
layer
thin film
light
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PCT/CN2019/097156
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English (en)
French (fr)
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蔡奇哲
汪红
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咸阳彩虹光电科技有限公司
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Priority to PCT/CN2019/097156 priority Critical patent/WO2021012165A1/zh
Publication of WO2021012165A1 publication Critical patent/WO2021012165A1/zh

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers

Definitions

  • the invention relates to the field of display technology, in particular to a thin film packaging structure, an OLED display panel and a display.
  • Flat display devices have many advantages such as thin body, power saving, and no radiation, and have been widely used.
  • Existing flat display devices mainly include liquid crystal displays (LCD) and organic electroluminescence devices (OELD), also known as organic light emitting diodes (OLEDs).
  • LCD liquid crystal displays
  • OELD organic electroluminescence devices
  • OLEDs organic light emitting diodes
  • Organic light-emitting diodes have the characteristics of self-luminescence, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., so they have received widespread attention.
  • As a new generation of display methods they have begun to gradually replace traditional liquid crystal display devices. It is used in mobile phone screens, computer monitors, full-color TVs and other fields.
  • Organic electroluminescent devices are different from traditional liquid crystal displays in that they do not require a backlight and are directly provided with very thin organic material coatings on the glass substrate. When current passes through, these organic material coatings will emit light.
  • the color filter Color Filter, CF
  • the light-emitting diode (White Organic light Emitting Diode, WOLED) is matched with traditional color filters.
  • the principle of the color filter method is to make the light-emitting layer emit white light, and then use the color filter to turn the white light into R (Red) light, G (Green) light and B (Blue) light to realize full-color display.
  • the invention provides a thin film packaging structure, an OLED display panel and a display.
  • the technical problem to be solved by the present invention is realized through the following technical solutions:
  • a thin film packaging structure which includes at least two inorganic layers and at least one organic layer, wherein:
  • the organic layer is arranged between two adjacent inorganic layers, and quantum dots are dispersed in at least one of the organic layers.
  • the quantum dots dispersed in the organic layer include at least one of yellow quantum dots, red quantum dots, and green quantum dots.
  • the quantum dots dispersed in the organic layer are red quantum dots and green quantum dots.
  • the material of the organic layer is polymethyl methacrylate.
  • the material of the inorganic layer is SiO x or SiN x .
  • An embodiment of the present invention further provides an OLED display panel.
  • the OLED display panel includes a light source layer and the thin film packaging structure according to any one of the above embodiments, wherein the thin film packaging structure is disposed on the light source layer.
  • the light source layer is a blue light source layer.
  • the OLED display panel further includes a color filter, and the color filter is disposed on the film packaging structure.
  • the color filter includes a red filter, a green filter and a blue filter.
  • An embodiment of the present invention also provides a display, which includes the OLED display panel described in any one of the above embodiments.
  • the present invention provides an organic layer in the two adjacent inorganic layers in the thin film packaging structure, and adds quantum dots to the organic layer, and matches the light source layer in the WOLED, using the organic layer
  • the quantum dots in the light source layer absorb the light emitted from the light source layer, thereby mixing into white light, and the white light emitted in this way has a narrower half-height, and the white light with a narrower half-height corresponds to a higher purity of the color. , So it can increase color saturation and improve color performance.
  • FIG. 1 is a schematic structural diagram of a thin film packaging structure provided by an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another thin film packaging structure provided by an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of yet another thin film packaging structure provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of yet another thin film packaging structure provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of yet another thin film packaging structure provided by an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of an OLED display panel provided by an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another OLED display panel provided by an embodiment of the present invention.
  • the mature CF technology of LCD can be used, no mask alignment is required, which greatly simplifies the evaporation process, thus reducing production costs, and can be used to prepare large-size and high-resolution OLEDs. Therefore, in order to realize full-color OLED display panels on the market, it is generally realized by superimposing top-emitting white organic light-emitting diodes and color filter layers. Among them, the superposition process of the WOLED layer with multiple WOLEDs and the color filter layer does not require the use of a high-precision metal mask for the masking process, and the high resolution of the OLED display can be achieved. Therefore, the OLED prepared in this way The display panel has been widely used.
  • WOLED is a combination of a variety of fluorescent materials or phosphorescent materials that can emit different colors to make it emit white light.
  • the problem is that the purity of the three primary colors of red, green and blue obtained after passing through the color filter is poor, resulting in poor color expression.
  • FIG. 1 is a schematic structural diagram of a thin film packaging structure provided by an embodiment of the present invention.
  • the thin film packaging structure provided by this embodiment may specifically include at least two inorganic layers 401 and at least one organic layer 402, wherein the organic layer 402 is disposed between two adjacent inorganic layers 401, and at least one organic layer 402 Quantum dots 403 are dispersed therein.
  • the packaging technology of OLED display panels is becoming more and more mature.
  • the packaging technology of OLED display panels may include, for example, face encapsulation (Face Encapsulation), welding encapsulation (Frit Encapsulation), thin film encapsulation (TFE, Thin Film Encapsulation), and so on.
  • face encapsulation Face Encapsulation
  • Finencapsulation welding encapsulation
  • TFE Thin Film Encapsulation
  • thin-film packaging technology has outstanding advantages in reducing device weight and thickness, reducing packaging accessories, reducing packaging costs, reducing packaging edge width, eliminating display dead corners, and curling flexibility. Therefore, it has attracted more and more attention and applications.
  • a typical thin-film packaging structure is generally composed of overlapping layers of inorganic materials and organic materials.
  • the inorganic material layer is generally a water and oxygen barrier layer, its main function is to block water and oxygen, and the organic material layer is a planarization layer, which is mainly used to cover defects (including particle, pinhole, etc.) on the surface of the inorganic material layer. Subsequent film formation provides a flat surface and can reduce the stress on the surface of the inorganic material layer and prevent the propagation of defects.
  • the organic material layer is generally a high molecular polymer such as acrylic or epoxy resin, which is deposited on the surface of the inorganic material layer by inkjet printing or vacuum evaporation.
  • Quantum dot materials Semi-dielectric, QD
  • Quantum dot materials semiconductor crystal grains with a particle size of 1-100nm. Because the particle size of the quantum dot material is small, smaller than or close to the exciton Bohr radius of the corresponding bulk material, a quantum confinement effect occurs.
  • the continuous band structure of the bulk material will be transformed into a discrete energy level structure, which is excited by an external light source. Down, electrons will undergo transitions and emit fluorescence.
  • the special discrete energy-level structure of quantum dot materials makes the half-wave width narrower, so it can emit higher-purity monochromatic light, which has higher luminous efficiency than traditional displays.
  • the energy level band gap of the quantum dot material is greatly affected by its size, light of different wavelengths can be excited by adjusting the size of the quantum dot material or using QDs of different components.
  • quantum dots 403 are added uniformly and dispersedly in the organic layer 402 of the thin film encapsulation structure 40, and an inorganic layer 401 is provided on both sides of the organic layer 402.
  • the arrangement of the inorganic layer 401 can protect the organic layer.
  • the quantum dots 403 in 402 and the organic layer 402 do not contact water and oxygen, and can maintain the vitality of the quantum dots 403, thereby ensuring the excitation effect of the quantum dots 403 in the organic layer 402 on the light source, and can extend the prepared device
  • the organic layer 402 belongs to an acrylic resin.
  • the functional group of this acrylic resin can not only enclose the quantum dots 403, but also make the quantum dots 403 evenly distributed.
  • the light-emitting layer in the OLED display panel The emitted light energy enters the organic material layer.
  • the light-emitting layer emits a narrow and symmetrical spectrum.
  • the light emitted by the light-emitting layer enters the organic material layer and is absorbed by the quantum dots 403 in the organic material layer. Need colored light.
  • the excitation spectrum of quantum dots is wide and continuously distributed, and the emission spectrum is narrow and symmetric, the half-height spectrum of the light emitted after being absorbed by the quantum dot 403 is narrow, which realizes the purification of the excited light and is not easy
  • the overlap of the spectrum occurs, so that when the excited light passes through the color filter, the color saturation can be increased and the color expression can be improved.
  • quantum dots include CdS, CdSe, CdTe, ZnO, ZnS, ZnSe, and ZnTe of the II-VI group, as well as the III-V group.
  • the thin film packaging structure 40 of this embodiment may include a plurality of inorganic layers 401 and organic layers 402 alternately stacked. As a result, water vapor and oxygen in the environment can be better isolated, so as to better protect the encapsulated components. In order to save materials and processes, the sum of the inorganic layer 401 and the organic layer 402 should not be too much. Those skilled in the art can set the number of layers of the inorganic layer 401 and the organic layer 402 according to the specific thin film packaging structure 40. This embodiment There is no specific limitation.
  • the thin film packaging structure 40 of this embodiment includes multiple inorganic layers 401 and multiple organic layers 402, multiple organic layers 402 or one organic layer 402 may be provided between two adjacent inorganic layers 401.
  • the uppermost and lowermost layers of the thin film packaging structure 40 are both inorganic layers 401, one of the organic layers 402 can be selected in the thin film packaging structure 40 of this embodiment, and quantum dots 403 are added to this organic layer 402. It is also possible to select multiple organic layers 402 plus quantum dots 403, or each organic layer 402 adds quantum dots 403.
  • This embodiment is not specifically limited, and those skilled in the art can select according to specific use environments and occasions. .
  • this embodiment specifically describes the specific structure of a thin film packaging structure 40 on the basis of the foregoing embodiments.
  • FIG. 2 is a schematic structural diagram of another thin film packaging structure provided by an embodiment of the present invention.
  • two inorganic layers ie, a first inorganic layer 4011 and a second inorganic layer 4012
  • an organic layer 402 Take an organic layer 402 as an example for specific description.
  • quantum dots 403 are dispersed in the organic layer 402.
  • blue light has the characteristics of small wavelength and high energy, so WOLED generally Blue light is selected as the light-emitting layer, so this embodiment specifically takes the light-emitting layer as the blue light-emitting layer as an example for description.
  • the thin film packaging structure of this embodiment can be disposed on the blue light-emitting layer, and the organic layer 402 of this embodiment is dispersed in the quantum
  • the dots 403 can be, for example, yellow quantum dots.
  • TFT Array Backplane thin film transistor array layer
  • the emitted blue light will enter the organic layer 402 of the thin film packaging structure 40, because the organic layer 402 is If the yellow quantum dot material is evenly dispersed, when the yellow quantum dots are excited by the blue light source, electrons undergo transitions to emit yellow light, and the blue light and yellow light are mixed to produce white light.
  • the blue light source emitted by the blue light-emitting layer Because the spectrum of the blue light source emitted by the blue light-emitting layer is narrow and symmetrical, the excitation spectrum of the yellow quantum dots is wide and continuously distributed, and the emission spectrum is narrow and symmetrical, the blue light source emitted by the blue light-emitting layer passes through
  • the yellow quantum dots in the organic layer 402 will be converted into yellow light with a narrower half-wave width after being excited, and the yellow light and blue light will be mixed into white light. Therefore, when the white light is converted through the color filter, the resulting light
  • the color purity is relatively high, so the color saturation of the obtained light can be increased, and the color performance capability of the display device can be enhanced.
  • red quantum dots and green quantum dots can also be uniformly dispersed in the organic layer 402.
  • the blue light emitting layer is driven by the thin film transistor array layer to emit blue light
  • the emitted blue light will enter the thin film packaging structure 40 In the organic layer 402, because the red quantum dots and the green quantum dots are uniformly dispersed in the organic layer 402, the red quantum dots and the green quantum dots are excited by the blue light source, electrons undergo transitions, and red light and green light are mixed into white light.
  • yellow quantum dots and red quantum dots can also be uniformly dispersed in the organic layer 402.
  • the blue light emitting layer is driven by the thin film transistor array layer to emit blue light
  • the emitted blue light will enter the thin film packaging structure 40 In the organic layer 402, because the yellow quantum dots and red quantum dots are uniformly dispersed in the organic layer 402, when the yellow quantum dots are excited by the blue light source, electrons undergo transitions to produce yellow fluorescence, and the blue and yellow light are mixed into white light. ;
  • the purity of the white light generated will be improved, and the luminous effect can be further improved.
  • the material of the organic layer 402 is polymethyl methacrylate
  • yellow quantum dots are added to polymethyl methacrylate, because polymethyl methacrylate belongs to a kind of acrylic resin, so the polymethyl methacrylate
  • the functional group of acrylic resin can effectively enclose the yellow quantum dots and at the same time make the yellow quantum dots uniformly dispersed in the polymethyl methacrylate.
  • the inorganic layer may be, for example, SiO x or SiN x .
  • SiO x or SiN x can better isolate water and oxygen.
  • the organic layer is arranged between the two inorganic layers to prevent water and oxygen from interacting with each organic layer.
  • the yellow quantum dots in the organic layer contact to maintain the activity of the yellow quantum dots.
  • the maintenance of the activity of the yellow quantum dots can ensure the light conversion effect of the yellow quantum dots entering the organic layer, and ensure that the yellow quantum dots are excited by the yellow quantum dots.
  • the emitted light has a narrow FWHM spectrum, which can increase color saturation and improve color performance.
  • this embodiment specifically describes the specific structure of another thin-film packaging structure 40 on the basis of the foregoing embodiments.
  • FIG. 3 is a schematic structural diagram of another thin film packaging structure provided by an embodiment of the present invention.
  • two inorganic layers ie, a first inorganic layer 4011 and a second inorganic layer 4012
  • three organic layers that is, the first organic layer 4021, the second organic layer 4022, and the third organic layer 4023
  • the second organic layer 4022 is dispersed with quantum Dots 403
  • this embodiment specifically takes the light emitting layer as a blue light emitting layer as an example for description.
  • the thin film packaging structure of this embodiment is disposed on the blue light emitting layer, and the quantum dots 403 dispersed in the second organic layer 4022 of this embodiment
  • green quantum dots and red quantum dots can be uniformly dispersed at the same time. Therefore, when the blue light emitting layer is driven by the thin film transistor array layer to emit blue light, the emitted blue light will enter the second organic layer 4022 of the thin film packaging structure 40, because the second In the organic layer 4022, the green quantum dot material and the red quantum dot material are uniformly dispersed, and the green quantum dot material and the red quantum dot material are excited by the blue light source, and the electrons undergo transitions to emit red and green light. Produces white fluorescence.
  • the green quantum dots and red quantum dots have a broad excitation spectrum and a narrow emission spectrum, so the blue light-emitting layer emits
  • the blue light source is excited and mixed by the green quantum dots and red quantum dots in the second organic layer 4022 to convert into white light with a narrower half-wave width. Therefore, when the white light is converted through a color filter, The color purity of the obtained light will be relatively high, and the color saturation of the obtained light can be improved, so that the color performance capability of the display device can be enhanced.
  • the material of the organic layer can be polymethyl methacrylate.
  • the functional groups of the acrylic resin of polymethyl methacrylate can effectively remove the green
  • the quantum dots and the red quantum dots are surrounded, and at the same time, the green quantum dots and the red quantum dots can be uniformly dispersed in the polymethyl methacrylate.
  • the inorganic layer can be, for example, SiO x or SiN x .
  • SiO x or SiN x can better isolate water and oxygen.
  • the organic layer is arranged between the two inorganic layers to avoid water and oxygen from the organic layer and the organic layer.
  • the green quantum dots and the red quantum dots are in contact to maintain the activity of the green quantum dots and the red quantum dots.
  • the activity of the green quantum dots and the red quantum dots can be maintained to ensure that the green quantum dots and the red quantum dots entering the organic layer are exposed to light
  • the conversion effect ensures the narrow half-height spectrum of the emitted light after the green quantum dots and the red quantum dots are excited and mixed, thereby improving color saturation and improving color performance.
  • this embodiment will list the thin film packaging structure 40 of various structures.
  • FIG. 4 is a schematic structural diagram of yet another thin film packaging structure provided by an embodiment of the present invention.
  • the light emitting layer is a blue light emitting layer as an example for description.
  • the thin film packaging structure of this embodiment may It is arranged on the blue light emitting layer.
  • there are three inorganic layers ie, the first inorganic layer 4011, the second inorganic layer 4012, and the third inorganic layer 4013) and two organic layers (ie the first organic layer).
  • the first organic layer 4021 and the second organic layer 4022 are taken as examples.
  • quantum dots 403 are dispersed in both the first organic layer 4021 and the second organic layer 4022, and the first organic layer 4021 and the second organic layer 4022
  • the quantum dots 403 dispersed in the organic layer 4022 can all be yellow quantum dots, and the first organic layer 4021 and the second organic layer 4022 can also be dispersed with green quantum dots and red quantum dots, and can also be the first layer
  • the quantum dots 403 dispersed in the organic layer 4021 are yellow quantum dots.
  • the second organic layer 4022 contains both green and red quantum dots.
  • the quantum dots 403 dispersed in the first organic layer 4021 can also be yellow quantum dots.
  • the quantum dots 403 dispersed in the second organic layer 4022 are red quantum dots, or the quantum dots 403 dispersed in the first organic layer 4021 are green quantum dots, and the quantum dots 403 dispersed in the second organic layer 4022 They are red quantum dots.
  • the light source is a blue light source.
  • the blue light source passing through the first organic layer 4021 Can enter the second organic layer 4022 to excite the quantum dots in the second organic layer 4022, thereby obtaining white light.
  • this embodiment only lists the case where blue light is concentrated to excite quantum dots to generate white light. Among them, those skilled in the art can also adjust the type and order of addition of quantum dots according to actual needs. This embodiment does not do this. Specific restrictions.
  • FIG. 5 is a schematic structural diagram of another thin-film packaging structure provided by an embodiment of the present invention.
  • two inorganic layers ie, the first inorganic layer 4011 and the second inorganic layer 4012
  • three organic layers ie, the first organic layer 4021, the second organic layer 4022, and the third organic layer 4023.
  • the first organic layer 4021 and the third organic layer 4021 Quantum dots 403 are dispersed in the layer 4023, and the quantum dots 403 dispersed in the first organic layer 4021 and the third organic layer 4023 may all be yellow quantum dots, the first organic layer 4021 and the third organic layer 4023 Green quantum dots and red quantum dots can also be dispersed in both, and the first organic layer 4021 can be yellow quantum dots, and the third organic layer 4023 can have both green quantum dots and red quantum dots dispersed.
  • the quantum dots 403 dispersed in the organic layer 4023 are yellow quantum dots, the quantum dots 403 dispersed in the first organic layer 4021 are red quantum dots, or the quantum dots 403 dispersed in the third organic layer 4023 are green quantum dots.
  • the dots, the quantum dots 403 dispersed in the first organic layer 4021 are red quantum dots.
  • the light source is a blue light source.
  • the blue light source through the first organic layer 4021 can enter The second organic layer 4022 excites the quantum dots in the second organic layer 4022, and the three kinds of light are mixed to obtain white light.
  • the structure of the above-mentioned thin film packaging structure is not the only structure.
  • the thin film packaging structure of this embodiment only needs to satisfy that the organic layer is between two inorganic layers, and the uppermost and lowermost layers of the thin film packaging structure are both inorganic layers. At least one of the organic layers has quantum dots uniformly dispersed.
  • the organic layer in this embodiment may be one layer, or two or more layers, as long as it meets the requirements for conversion into the required light after passing through the thin film encapsulation structure.
  • the present invention provides an OLED display panel based on the above embodiments.
  • FIG. 6, is a schematic structural diagram of an OLED display panel provided by an embodiment of the present invention.
  • the OLED display panel may specifically include a substrate 10, a thin film transistor array layer 20, a light source layer 30, and a thin film packaging structure 40.
  • the thin film transistor array layer 20 is provided on the substrate 10, the light source layer 30 is provided on the thin film transistor array layer 20, and the thin film packaging structure 40 is provided on the light source layer 30 for packaging the thin film transistor array layer 20 and the light source layer 30.
  • the thin film packaging structure 40 may specifically include at least two inorganic layers 401 and at least one organic layer 402, wherein the organic layer 402 is disposed between two adjacent inorganic layers 401, and quantum dots 403 are dispersed in at least one organic layer 402, and the substrate
  • the material of 10 can be, for example, semiconductor materials such as glass and quartz, or organic polymers.
  • the thin film transistor array layer 20 is used to drive the light source layer 30 to emit light.
  • the thin film transistor array layer 20 can be a-Si TFT, oxide TFT, LTPS-TFT (low temperature polysilicon) and HTPS-TFT (high temperature polysilicon).
  • the thin film packaging structure 40 includes two inorganic layers 401 and one organic layer 402 as an example for specific description.
  • the voltage when a voltage is applied between the anode and the cathode, the voltage Driven, the holes injected by the anode enter the light source layer 30, the electrons injected by the cathode enter the light source layer 30, the holes and electrons entering the light source layer 30 recombine to form excitons in the recombination zone, and the exciton radiation transitions to emit light The light-emitting phenomenon occurs.
  • quantum dots 403 are uniformly dispersed in the organic layer 402 of the thin film encapsulation structure 40 covering the light source layer 30.
  • the light emitted by the light source layer 30 enters the organic layer 402 after being excited.
  • the quantum dots 403 in the organic layer 402 emit light of the desired color after being excited, and the half-height spectrum of the light emitted by the excitation of the quantum dots 403 is narrow, which realizes the purification of the excited light, and the spectrum is not easy to appear.
  • the material of the organic layer 402 may be polymethyl methacrylate, and the material of the organic layer 402 may also be other organic materials.
  • the material of the inorganic layer 401 may be SiO x or SiN x , and the material of the organic layer 402 may also be other inorganic materials.
  • the light source layer 30 may be selected as a blue light source layer.
  • the quantum dots 403 dispersed in the organic layer 402 may be yellow quantum dots, and the quantum dots 403 dispersed in the organic layer 402 It can also be red quantum dots and green quantum dots at the same time.
  • the blue light emitted by the blue light source layer irradiates the quantum dots dispersed in the organic layer 402, it will be stimulated to emit white light.
  • FIG. 7 is a schematic structural diagram of another OLED display panel provided by an embodiment of the present invention.
  • a layer of color filter 50 may also be provided on the film packaging structure 40 of this embodiment.
  • the white light emitted by the excitation of the quantum dots passes through the color filter 50 to achieve full-color display, so that the light emitted by the OLED display panel can selectively pass through the display panel.
  • the color filter 50 may include a red filter, a green filter, and a blue filter.
  • the blue light emitted by the blue light source layer is excited by the organic layer quantum dots and the white light emitted is matched to the color.
  • the red filter, the green filter and the blue filter are respectively converted into red light, green light and blue light to realize the display of the three primary colors of red, green and blue, so that various colors can be superimposed to realize color display.
  • An embodiment of the present invention also provides a display, which includes the OLED display panel described in the foregoing embodiment.
  • the display can be, for example, any product or component with display function, such as LTPO display device, Micro LED display device, electronic paper, OLED panel, AMOLED panel, mobile phone, tablet computer, TV, display, notebook computer, digital photo frame, etc.
  • the OLED display panel of this embodiment may specifically include a substrate 10, a thin film transistor array layer 20, a light source layer 30, a thin film packaging structure 40 and a color filter 50, wherein the thin film transistor array layer 20 Is disposed on the substrate 10, the light source layer 30 is disposed on the thin film transistor array layer 20, the thin film packaging structure 40 covers the light source layer 30, and the color filter 50 is disposed on the thin film packaging structure 40.
  • the thin film packaging structure 40 may specifically include at least Two inorganic layers 401 and at least one organic layer 402, wherein the organic layer 402 is disposed between two adjacent inorganic layers 401, and quantum dots 403 are dispersed in at least one organic layer 402.
  • the material of the organic layer 402 may be polymethyl methacrylate, and the material of the organic layer 402 may also be other organic materials.
  • the material of the inorganic layer 401 may be SiO x or SiN x , and the material of the organic layer 402 may also be other inorganic materials.
  • the light source layer 30 is a blue light source layer.
  • the quantum dots dispersed in the organic layer may be yellow quantum dots, and the quantum dots dispersed in the organic layer may also be red quantum dots and green quantum dots at the same time.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, “plurality” means two or more, unless otherwise specifically defined.
  • the "above” or “below” of the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

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Abstract

本发明通过在薄膜封装结构中的相邻两层的无机层中设置一层有机层，并在该有机层中添加量子点，搭配WOLED中的光源层，利用有机层中的量子点吸收光源层中所发射出的光，从而混合成白光，而这种方式所发出的白光的半高宽较窄，而半高宽较窄的白光对应表现的颜色的纯度比较高，因此可以提高色彩饱和度，改善颜色表现能力。

Description

一种薄膜封装结构、OLED显示面板及显示器 技术领域
本发明涉及显示技术领域，具体涉及一种薄膜封装结构、OLED显示面板及显示器。
背景技术
平面显示装置具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。现有的平面显示装置主要包括液晶显示器(Liquid Crystal Display，LCD)及有机电致发光器件(Organic Electroluminescence Device，OELD)，也称为有机发光二极管(Organic Light Emitting Diode，OLED)。
有机发光二极管具备自发光、高亮度、宽视角、高对比度、可挠曲、低能耗等特性，因此受到广泛的关注，并作为新一代的显示方式，已开始逐渐取代传统液晶显示装置，被广泛应用在手机屏幕、电脑显示器、全彩电视机等领域。有机电致发光器件与传统的液晶显示器不同，其无需背光源，直接在玻璃基板上设置非常薄的有机材料涂层，当有电流通过时，这些有机材料涂层就会发光。为了实现OLED显示器的全彩化，目前有三种技术，分别是三原色发光法、彩色滤光片(Color Filter，CF)法和色转换法，目前市场上的大尺寸OLED显示器主推的技术为白色有机发光二极管(White Organic light Emitting Diode，WOLED)搭配传统彩色滤光片，彩色滤光片法的原理是让发光层发出白光，再使用彩色滤光片将白色光变成R(Red)光、G(Green)光、B(Blue)光，以实现全彩显示。
但是由于WOLED是通过多层结构混色发白光的方式，红绿光的光谱存在部分重叠，所以导致彩色滤光片法所显示的光的色彩饱和度不高、色彩表现力差的问题。
发明内容
本发明提供了一种薄膜封装结构、OLED显示面板及显示器。本发明要解决的技术问题通过以下技术方案实现：
一种薄膜封装结构，所述薄膜封装结构包括至少两层无机层和至少一层有机层，其中，
所述有机层设置于相邻两个无机层之间，并且至少一层所述有机层中分散有量子点。
在本发明的一个实施例中，所述有机层中分散的量子点包括黄色量子点、红色量子点和绿色量子点中的至少一种。
在本发明的一个实施例中，所述有机层中分散的量子点为红色量子点和绿色量子点。
在本发明的一个实施例中，所述有机层的材料为聚甲基丙烯酸甲酯。
在本发明的一个实施例中，所述无机层的材料为SiO x或者SiN x。
本发明一个实施例还提供一种OLED显示面板，所述OLED显示面板包括光源层和上述任一项实施例所述的薄膜封装结构，其中，所述薄膜封装结构设置于所述光源层上。
在本发明的一个实施例中，所述光源层为蓝色光源层。
在本发明的一个实施例中，所述OLED显示面板还包括彩色滤光片，所述彩色滤光片设置于所述薄膜封装结构上。
在本发明的一个实施例中，所述彩色滤光片包括红色滤光片、绿色滤光片和蓝色滤光片。
本发明一个实施例还提供一种显示器，所述显示器包括上述任一项实施例所述的OLED显示面板。
由上述的技术方案可见，本发明通过在薄膜封装结构中的相邻两层的无机层中设置一层有机层，并在该有机层中添加量子点，搭配WOLED中的光源层，利用有机层中的量子点吸收光源层中所发射出的光，从而混合成白光，而这种方式所发出的白光的半高宽较窄，而半高宽较窄的白光对应表现的颜色的纯度比较高，因此可以提高色彩饱和度，改善颜色表现能力。
附图说明
为了更清楚地说明本发明实施例和现有技术的技术方案，下面对实施例和现有技术中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种薄膜封装结构的结构示意图；
图2为本发明实施例提供的另一种薄膜封装结构的结构示意图；
图3为本发明实施例提供的再一种薄膜封装结构的结构示意图；
图4为本发明实施例提供的又一种薄膜封装结构的结构示意图；
图5为本发明实施例提供的又一种薄膜封装结构的结构示意图；
图6为本发明实施例提供的一种OLED显示面板的结构示意图；
图7为本发明实施例提供的另一种OLED显示面板的结构示意图。
附图标记说明：
10-基板；20-薄膜晶体管阵列层；30-光源层；40-薄膜封装结构；50-彩色滤光片；401-无机层；402-有机层；403-量子点；4011-第一层无机层；4012-第二层无机层；4013-第三层无机层；4021-第一层有机层；4022-第二层有机层；4023-第三层有机层。
具体实施方式
为使本发明的目的、技术方案、及优点更加清楚明白，以下参照附图并举实施例，对本发明进一步详细说明。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例一
由于可利用LCD成熟的CF技术，不需要掩膜对位，极大地简化了蒸镀过程，因而能降低生产成本，可用于制备大尺寸高分辨率OLED。因此目前市场上为了实现OLED显示面板的全彩化，一般是通过顶发射白色有机发光二极管和彩色滤光层叠加来实现。其中，具有多个WOLED的WOLED层和彩色滤光层叠加过程不需要使用高精度金属掩膜版来进行掩膜工艺，就可以实现OLED显示器的高分辨率，因此通过这种方式所制备的OLED显示面板得到了广泛应用。WOLED是由合并使用多种可发出不同颜色的荧光材料或磷光材料，以使其发出白光。但是问题在于通过彩色滤光片后得到的红绿蓝三原色色纯度较差，导致色彩表现力较差。
因此，基于上述原因，本实施例提供一种薄膜封装结构，请参见图1，图1为本发明实施例提供的一种薄膜封装结构的结构示意图。本实施例所提供的 薄膜封装结构具体可以包括至少两层无机层401和至少一层有机层402，其中，有机层402设置于相邻两个无机层401之间，并且至少一层有机层402中分散有量子点403。
目前，对OLED显示面板的封装技术日趋成熟，OLED显示面板的封装技术例如可以包括面封装(Face Encapsulation)、熔接封装(Frit Encapsulation)、薄膜封装(TFE，Thin Film Encapsulation)等。其中，薄膜封装技术在减少器件重量和厚度、减少封装配件降低封装成本、减小封装边缘宽度、消灭显示死角以及可卷曲柔性等方面有突出的优点，因此得到了越来越广泛的关注和应用。典型的薄膜封装结构一般是由无机材料层和有机材料层交叠重复组成。其中，无机材料层一般为水氧阻隔层，其主要作用是用来阻隔水氧，有机材料层为平坦化层，主要作用为覆盖无机材料层表面的缺陷(包括particle、pin hole等)，为后续成膜提供一个平坦的表面，并且能减小无机材料层表面的应力，以及防止缺陷扩展。有机材料层一般为亚克力或环氧树脂等高分子聚合物，通过喷墨打印或者真空蒸镀的方式沉积在无机材料层表面。
量子点材料(Quantum Dot，QD)的粒径在1-100nm的半导体晶粒。由于量子点材料的粒径较小，小于或者接近相应本体材料的激子波尔半径，产生量子限域效应，本体材料连续的能带结构会转变为分立的能级结构，在外部光源的激发下，电子会发生跃迁，发射荧光。量子点材料这种特殊的分立能级结构使其半波宽较窄，因而可发出较高纯度的单色光，相比于传统显示器具有更高的发光效率。同时，由于量子点材料的能级带隙，受其尺寸影响较大，可以通过调控量子点材料的尺寸或使用不同成分的QD来激发出不同波长的光。
在本实施例中，通过在薄膜封装结构40的有机层402中均匀、分散的添加量子点403，且在该有机层402两侧均设置有无机层401，无机层401的设置可以保护有机层402及有机层402中的量子点403不接触水和氧气，可以保持量子点403的活力，从而可以保证进入有机层402中的量子点403对光源的激发效果，并且还能延长所制备的器件的寿命，同时有机层402属于一种亚克力树脂，这种亚克力树脂的官能团不仅能将量子点403包围起来，同时还能使得量子点403达到均匀分布的效果，因此当OLED显示面板中的发 光层所发出的光能进入有机材料层中，一般发光层发射出的光谱具有窄而对称的特点，而发光层发射出的光进入有机材料层，经有机材料层中的量子点403吸收后发射出所需要颜色的光。因量子点的激发光谱宽且连续分布，而发射谱窄且对称，则经量子点403吸收后所发射出的光的半高宽频谱窄，实现了对所激发的光的纯化，并且不容易出现光谱的重叠，从而当所激发的光经过彩色滤光片后可以提高色彩饱和度，改善色彩表现力。
在本实施例中，量子点403的种类很多，优选的是，在本实施例中量子点包括II-VI族的CdS、CdSe、CdTe、ZnO、ZnS、ZnSe和ZnTe，以及III-V族的GaAs、GaP、GaAs、GaSb、HgS、HgSe、HgTe、InAs、InP、InSb、AlAs、AlP和AlSb等。
可以理解的是，本实施例的薄膜封装结构40可以包括多个交替层叠的无机层401和有机层402。由此，可以更好地隔绝环境中的水汽和氧，从而更好地保护被封装的部件。为了节省材料和工艺，无机层401和有机层402之和不宜过多，本领域技术人员可以根据具体的薄膜封装结构40对无机层401和有机层402的层数进行设置，本实施例对此不作具体限定。同时，若本实施例的薄膜封装结构40包括多层无机层401和多层有机层402，相邻两层无机层401之间可以设置多层有机层402，也可以设置一层有机层402，只要薄膜封装结构40的最上层和最下层均为无机层401即可，在本实施例的薄膜封装结构40中可以选取其中一层有机层402，并在此有机层402中添加量子点403，也可以选取其中多层有机层402加量子点403，或者每一层有机层402中均添加量子点403，本实施例对此不作具体限定，本领域技术人员可以根据具体使用环境和场合进行选取。
实施例二
为了更好的对薄膜封装结构40进行说明，本实施例在上述实施例的基础上对一种薄膜封装结构40的具体结构进行具体说明。
请参见图2，图2为本发明实施例提供的另一种薄膜封装结构的结构示意图，在本实施例中以两层无机层(即第一层无机层4011和第二层无机层4012)和一层有机层402为例进行具体说明，其中，本实施例在有机层402中分散有量子点403，具体的，对于WOLED而言，因蓝光具有波长小、能量高的特 点，因此WOLED一般选用蓝光作为发光层，因此本实施例具体以发光层为蓝光发光层为例进行说明，本实施例的薄膜封装结构可以设置于蓝光发光层上，并且本实施例的有机层402中分散的量子点403例如可以为黄色量子点，则当蓝光发光层经薄膜晶体管阵列层(TFT Array Backplane)驱动发出蓝光后，所发射的蓝光会进入薄膜封装结构40的有机层402中，因为有机层402中均匀分散着黄色量子点材料，则黄色量子点在蓝光光源的激发下，电子发生跃迁，发射出黄光，蓝光、黄光混合产生白光。因蓝色发光层所发出的蓝色光源的光谱具有窄而对称的特点，黄色量子点的激发光谱宽且连续分布，而发射谱窄且对称，则蓝色发光层所发出的蓝色光源经有机层402中的黄色量子点的激发后会转换为半波宽较窄的黄光，黄光与蓝光混合成白光，因此当将这些白光经过彩色滤光片进行转换后，所得到的光的颜色纯度则会比较高，因此可以提高所得到的光的色彩饱和度，使显示装置的色彩表现能力得到增强。
另外，为了发出白光，有机层402中还可以同时均匀分散着红色量子点和绿色量子点，则当蓝光发光层经薄膜晶体管阵列层驱动发出蓝光后，所发射的蓝光会进入薄膜封装结构40的有机层402中，因为有机层402中均匀分散着红色量子点和绿色量子点，则红色量子点和绿色量子点在蓝光光源的激发下，电子发生跃迁，发出红光和绿光混合成白光。
还有为了发出白光，有机层402中还可以同时均匀分散着黄色量子点和红色量子点，则当蓝光发光层经薄膜晶体管阵列层驱动发出蓝光后，所发射的蓝光会进入薄膜封装结构40的有机层402中，因为有机层402中均匀分散着黄色量子点和红色量子点，则黄色量子点在蓝光光源的激发下，电子发生跃迁，则产生出黄色的荧光，蓝光和黄光混合成白光；同时因为红色量子点的存在，会提高所产生的白光的纯度，能够更进一步地改善发光效果。
进一步地，有机层402的材料为聚甲基丙烯酸甲酯，将黄色量子点添加至聚甲基丙烯酸甲酯，因为聚甲基丙烯酸甲酯属于一种亚克力树脂，所以聚甲基丙烯酸甲酯的亚克力树脂的官能团能够有效的将黄色量子点包围起来，同时还能使得黄色量子点均匀的分散在聚甲基丙烯酸甲酯中。
进一步地，无机层例如可以为SiO x或者SiN x，SiO x或者SiN x可以更好的 隔绝水和氧气，有机层设置于两层无机层之间，可以避免水和氧气与各层有机层及有机层中的黄色量子点接触，从而能够保持黄色量子点的活性，黄色量子点的活性的保持可以保证进入有机层中的黄色量子点对光的转换效果，确保经黄色量子点受激发后所发射出的光的半高宽频谱窄，从而可以提高色彩饱和度，改善颜色表现能力。
实施例三
为了更好的对薄膜封装结构40进行说明，本实施例在上述实施例的基础上对另一种薄膜封装结构40的具体结构进行具体说明。
请参见图3，图3为本发明实施例提供的再一种薄膜封装结构的结构示意图，在本实施例中以两层无机层(即第一层无机层4011和第二层无机层4012)和三层有机层(即第一层有机层4021、第二层有机层4022和第三层有机层4023)为例进行具体说明，其中，本实施例在第二层有机层4022中分散有量子点403，本实施例具体以发光层为蓝光发光层为例进行说明，本实施例的薄膜封装结构设置于蓝光发光层上，并且本实施例的第二层有机层4022中分散的量子点403例如可以同时均匀分散绿色量子点和红色量子点，因此当蓝光发光层经薄膜晶体管阵列层驱动发出蓝光后，所发射的蓝光会进入薄膜封装结构40的第二层有机层4022中，因为第二层有机层4022中均匀分散着绿色量子点材料和红色量子点材料，则绿色量子点材料和红色量子点材料在蓝光光源的激发下，电子发生跃迁，发出红光和绿光，则经过混合后产生白色的荧光，因蓝色发光层所发出的蓝色光源的光谱具有窄而对称的特点，绿色量子点和红色量子点具有宽的激发谱和窄的发射谱，则蓝色发光层所发出的蓝色光源经第二层有机层4022中的绿色量子点和红色量子点的激发并混合后会转换为半波宽较窄的白光，因此当将这些白光经过彩色滤光片进行转换后，所得到的光的颜色纯度则会比较高，可以提高所得到的光的色彩饱和度，使显示装置的色彩表现能力得到增强。
具体地，有机层的材料可以为聚甲基丙烯酸甲酯，将绿色量子点和红色量子点添加至聚甲基丙烯酸甲酯，则聚甲基丙烯酸甲酯的亚克力树脂的官能团能够有效的将绿色量子点和红色量子点包围起来，同时还能使得绿色量子点和红色量子点均匀的分散在聚甲基丙烯酸甲酯中。
另外，无机层例如可以为SiO x或者SiN x，SiO x或者SiN x可以更好地隔绝水和氧气，有机层设置于两层无机层之间，可以避免水和氧气与有机层及有机层中的绿色量子点和红色量子点接触，从而能够保持绿色量子点和红色量子点的活性，绿色量子点和红色量子点的活性的保持可以保证进入有机层中的绿色量子点和红色量子点对光的转换效果，确保经绿色量子点和红色量子点激发并混合后所发射出的光的半高宽频谱窄的效果，从而可以提高色彩饱和度，改善颜色表现能力。
实施例四
为了更好地对薄膜封装结构40进行说明，本实施例将列举多种结构的薄膜封装结构40。
例如，请参见图4，图4为本发明实施例提供的又一种薄膜封装结构的结构示意图，本实施例具体以发光层为蓝光发光层为例进行说明，本实施例的薄膜封装结构可以设置于蓝光发光层上，本实施例中以三层无机层(即第一层无机层4011、第二层无机层4012和第三层无机层4013)和两层有机层(即第一层有机层4021和第二层有机层4022)为例，其中，本实施例在第一层有机层4021和第二层有机层4022中均分散有量子点403，并且第一层有机层4021和第二层有机层4022中分散的量子点403可以均为黄色量子点，第一层有机层4021和第二层有机层4022中也可以均分散着绿色量子点和红色量子点，并且也可以第一层有机层4021中分散的量子点403为黄色量子点、第二层有机层4022中同时分散着绿色量子点和红色量子点，还可以第一层有机层4021中分散的量子点403为黄色量子点、第二层有机层4022中分散的量子点403为红色量子点，或者还可以第一层有机层4021中分散的量子点403为绿色量子点、第二层有机层4022中分散的量子点403为红色量子点，在多层有机层中添加量子点，可以提高光源的转换率，例如光源为蓝光光源，当蓝光光源照射至薄膜封装结构中时，透过第一层有机层4021的蓝光光源，可以进入第二层有机层4022中激发第二层有机层4022中的量子点，从而获得白光。应该注意的是，本实施例仅列举了集中蓝光激发量子点产生白光的情况，其中，本领域技术人员还可以根据实际需求对量子点添加的种类、顺序做出调整，本实施例对此不作具体限定。
又例如，请参见图5，图5为本发明实施例提供的又一种薄膜封装结构的结构示意图，本实施例中以两层无机层(即第一层无机层4011和第二层无机层4012)和三层有机层(即第一层有机层4021、第二层有机层4022和第三层有机层4023)为例，其中，本实施例在第一层有机层4021和第三层有机层4023中均分散有量子点403，并且第一层有机层4021和第三层有机层4023中分散的量子点403可以均为黄色量子点，第一层有机层4021和第三层有机层4023中也可以均分散着绿色量子点和红色量子点，并且也可以第一层有机层4021为黄色量子点、第三层有机层4023中同时分散着绿色量子点和红色量子点，还可以第三层有机层4023中分散的量子点403为黄色量子点、第一层有机层4021中分散的量子点403为红色量子点，或者还可以第三层有机层4023中分散的量子点403为绿色量子点、第一层有机层4021中分散的量子点403为红色量子点，例如光源为蓝光光源，当蓝光光源照射至薄膜封装结构中时，透过第一层有机层4021的蓝光光源，可以进入第二层有机层4022中激发第二层有机层4022中的量子点，三种光混合后得到白光。
应该明白的是，上述薄膜封装结构的结构并非唯一的结构，本实施例的薄膜封装结构只要满足有机层介于两层无机层之间，薄膜封装结构的最上层和最下层均为无机层，且至少其中一层有机层中均匀分散有量子点即可。
另外，本实施例的有机层可以为一层，也可以为两层甚至更多层，其只要满足通过薄膜封装结构后转换为所需要的光即可。
本发明实施例所提供的薄膜封装结构，其实现原理和技术效果与上述实施例类似，在此不再赘述。
实施例五
本发明在上述实施例的基础上提供一种OLED显示面板。请参见图6，图6为本发明实施例提供的一种OLED显示面板的结构示意图，该OLED显示面板具体可以包括基板10、薄膜晶体管阵列层20、光源层30和薄膜封装结构40，其中，薄膜晶体管阵列层20设置于基板10上，光源层30设置于薄膜晶体管阵列层20上，薄膜封装结构40设置于光源层30上，用于封装薄膜晶体管阵列层20和光源层30，薄膜封装结构40具体可以包括至少两层无机层401和至少一层有机层402，其中，有机层402设置于相邻两个无机层401 之间，并且至少一层有机层402中分散有量子点403，基板10的材质例如可以是玻璃、石英等半导体材料，也可以是有机物聚合物等，薄膜晶体管阵列层20用于驱动光源层30进行发光，薄膜晶体管阵列层20可以为a-Si TFT、oxide TFT、LTPS-TFT(低温多晶硅)及HTPS-TFT(高温多晶硅)。
请再次参见图6，本实施例以薄膜封装结构40包括两层无机层401和一层有机层402为例进行具体说明，在具体使用时，当阳极和阴极之间施加电压时，在电压的驱动下，由阳极注入的空穴进入光源层30中，由阴极注入的电子进入光源层30中，进入到光源层30中的空穴和电子在复合区复合形成激子，激子辐射跃迁发光而产生发光现象，本实施例在覆盖于光源层30上的薄膜封装结构40的有机层402中均匀分散有量子点403，光源层30受激发后所发射出的光进入有机层402中，经有机层402中的量子点403激发后发射出所需要颜色的光，则经量子点403激发所发射出的光的半高宽频谱窄，实现了对所激发的光的纯化，并且不容易出现光谱的叠加，从而当所激发的光经过彩色滤光片后可以提高色彩饱和度，改善色彩表现力。
在一个实施例中，有机层402的材料例如可以为聚甲基丙烯酸甲酯，有机层402的材料也可以为其它有机材料。
在一个实施例中，无机层401的材料例如可以为SiO x或者SiN x，有机层402的材料也可以为其它无机材料。
在一个实施例中，为了发出白光，则可以将光源层30选择为蓝色光源层，此时，有机层402中分散的量子点403可以为黄色量子点，有机层402中分散的量子点403也可以同时为红色量子点和绿色量子点。当蓝色光源层发出的蓝光照射到有机层402中分散的量子点上时，将受激发射出白光。
请参见图7，图7为本发明实施例提供的另一种OLED显示面板的结构示意图，本实施例的薄膜封装结构40上还可以设置一层彩色滤光片50，彩色滤光片50设置于出光侧，受量子点激发所发射出的白光，经彩色滤光片50之后实现全彩显示，使OLED显示面板所发出的光线选择性地透出显示面板。
进一步地，彩色滤光片50可以包括红色滤光片、绿色滤光片和蓝色滤光片，蓝色光源层发出的蓝光经有机层量子点激发所发射出的白光通过颜色相适配的红色滤光片、绿色滤光片和蓝色滤光片分别转变为红光、绿光和蓝光， 实现了红、绿、蓝三基色的显示，从而可以叠加出各种色彩，实现彩色显示。
本发明实施例提供的OLED显示面板，其实现原理和技术效果与上述实施例类似，在此不再赘述。
实施例六
本发明实施例还提供一种显示器，该显示器包括上述实施例所述的OLED显示面板。该显示器例如可以为：LTPO显示装置、Micro LED显示装置、电子纸、OLED面板、AMOLED面板、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框等任何具有显示功能的产品或部件。
具体地，请再次参见图7，本实施例的OLED显示面板具体可以包括基板10、薄膜晶体管阵列层20、光源层30、薄膜封装结构40和彩色滤光片50，其中，薄膜晶体管阵列层20设置于基板10上，光源层30设置于薄膜晶体管阵列层20上，薄膜封装结构40覆盖于光源层30上，彩色滤光片50设置于薄膜封装结构40上，薄膜封装结构40具体可以包括至少两层无机层401和至少一层有机层402，其中，有机层402设置于相邻两个无机层401之间，并且至少一层有机层402中分散有量子点403。
在一个实施例中，有机层402的材料例如可以为聚甲基丙烯酸甲酯，有机层402的材料也可以为其它有机材料。
在一个实施例中，无机层401的材料例如可以为SiO x或者SiN x，有机层402的材料也可以为其它无机材料。
在一个实施例中，光源层30为蓝色光源层，此时，有机层中分散的量子点可以为黄色量子点，有机层中分散的量子点也可以同时为红色量子点和绿色量子点。
本发明实施例提供的显示器的OLED显示面板，其实现原理和技术效果与上述实施例类似，在此不再赘述。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的 方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。此外，本领域的技术人员可以将本说明书中描述的不同实施例或示例进行接合和组合。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。

Claims (9)

  1. 一种薄膜封装结构(40)，其特征在于，所述薄膜封装结构(40)包括至少两层无机层(401)和至少一层有机层(402)，其中，
    所述有机层(402)设置于相邻两个无机层(401)之间，并且至少一层所述有机层(402)中分散有量子点(403)。
  2. 根据权利要求1所述的薄膜封装结构(40)，其特征在于，所述有机层(402)中分散的量子点(403)包括黄色量子点、红色量子点和绿色量子点中的至少一种。
  3. 根据权利要求1所述的薄膜封装结构(40)，其特征在于，所述有机层(402)的材料为聚甲基丙烯酸甲酯。
  4. 根据权利要求1所述的薄膜封装结构(40)，其特征在于，所述无机层(401)的材料为SiO x或者SiN x。
  5. 一种OLED显示面板，其特征在于，所述OLED显示面板包括光源层(30)和权利要求1至4任一项所述的薄膜封装结构(40)，其中，所述薄膜封装结构(40)设置于所述光源层(30)上。
  6. 根据权利要求5所述的OLED显示面板，其特征在于，所述光源层(30)为蓝色光源层。
  7. 根据权利要求5所述的OLED显示面板，其特征在于，所述OLED显示面板还包括彩色滤光片(50)，所述彩色滤光片(50)设置于所述薄膜封装结构(40)上。
  8. 根据权利要求7所述的OLED显示面板，其特征在于，所述彩色滤光片(50)包括红色滤光片、绿色滤光片和蓝色滤光片。
  9. 一种显示器，其特征在于，所述显示器包括权利要求6至8任一项所述的OLED显示面板。
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